CN101965704B - Feedback with unequal error protection - Google Patents
Feedback with unequal error protection Download PDFInfo
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- CN101965704B CN101965704B CN200880124874.0A CN200880124874A CN101965704B CN 101965704 B CN101965704 B CN 101965704B CN 200880124874 A CN200880124874 A CN 200880124874A CN 101965704 B CN101965704 B CN 101965704B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/35—Unequal or adaptive error protection, e.g. by providing a different level of protection according to significance of source information or by adapting the coding according to the change of transmission channel characteristics
- H03M13/356—Unequal error protection [UEP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0028—Formatting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0041—Arrangements at the transmitter end
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/007—Unequal error protection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0072—Error control for data other than payload data, e.g. control data
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- Theoretical Computer Science (AREA)
- Mobile Radio Communication Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
Methods and devices provide a feedback message having unequal error protection. The feedback message may include channel quality indicators. The channel quality indicators may have different levels of error protection based on a transmission property.
Description
Technical field
In general, realization as herein described relates to the feedback scheme in communication system with unequal error protection (unequal error protection).
Background technology
In communication system, for example, in wireless communication system, two devices can be by setting up and keeping communication link to communicate.For example, radio station and subscriber equipment (UE) can communicate.A basic aspect of this communication is link circuit self-adapting (linkadaptation).For example, radio station transmits to UE in the mode of the channel condition that adapts to UE and run into.Radio station can transmit one or more feedback messages to radio station according to UE and carry out link circuit self-adapting.Wherein, feedback message also can comprise CQI (CQI).UE generates CQI according to it to the estimation of existing channel condition.In multiple-input and multiple-output (MIMO) communication system, UE can be each communication layers (for example data flow) CQI is provided.
But providing in the existing solution of every layer of CQI feedback, no matter UE transmits feedback message and the content of feedback message and/or there is no the relation between Recognition feedback message content, respective channels condition and error protection demand.For example, UE may transmit feedback message with inadequate error protection.In this, the information comprising in feedback message may be lost or be decoded improperly by radio station, and this can cause bad communication the between UE and radio station.UE can also transmit feedback message with unnecessary high error protection grade, wastes thus the communication resource.
Summary of the invention
An object is the operability of eliminating at least a portion of above-mentioned shortcoming and improving the device in communication system.
According to an aspect, a kind of for the method for feedback is provided by the device associated with wireless network, feature can be: the receiver via device receives transmission, generated feedback message according to receive transmission, feedback message can comprise the ordered set of feedback fraction, each feedback fraction has relation with the transport property can with transport property value scope, wherein with for transmitting compared with the more low transmission property value of the lower maximum data rate of realization, larger transport property value is for may transmit the higher maximum data rate of realization, data rate is corresponding to the payload size that may transmit, and wherein the ordered set of definable feedback fraction makes the first feedback fraction in the ordered set of feedback fraction minimum in transport property value scope each in feedback fraction can be greater than the minimum in the transport property value scope of last feedback fraction in ordered set, and the relation between each feedback fraction and transport property value scope makes the one or more information that comprise in feedback fraction, this information is predicted the communication performance that may transmit with the characteristic corresponding with any transport property value in transport property value scope at least partly, use provides the unequal error protection code of multiple error protection grades to encode to feedback message, wherein except the first feedback fraction, the error protection grade of each feedback fraction is less than or equal to the error protection grade of last feedback fraction, and error protection grade is unequal for all feedback fractions of ordered set, and transmit encoded feedback message.
According on the other hand, it is a kind of for the method for link circuit self-adapting is provided by the device associated with wireless network, feature can be: receive the feedback message of encoding with unequal error protection code, this feedback message can comprise the ordered set of feedback fraction, each feedback fraction has relation with the transport property can with transport property value scope, wherein the first feedback fraction in the ordered set of feedback fraction the error protection grade of each feedback fraction less than or equal to the error protection grade of the last feedback fraction of the ordered set of feedback fraction, and error protection grade is unequal for the ordered set of feedback fraction, feedback message is decoded, carry out link circuit self-adapting according to the subsequent transmission that is decoded as of feedback message, and transmit subsequent transmission according to link circuit self-adapting.
According to another aspect, a kind of device characteristic can be transceiver, and this transceiver configuration becomes: receive the transmission from another device, generation comprises the feedback message of feedback fraction set, each feedback fraction has relation with the transport property can with transport property value scope, transport property value realizes data rate ranges for transmitting accordingly, and wherein feedback fraction each can comprise the information of the communication performance that prediction may transmit, and feedback fraction has certain order, wherein less error protection is offered the feedback fraction associated with the transport property value that realizes high data rate more by this order, and larger error protection is offered to the feedback fraction associated with the transport property value that realizes lower data rate, use unequal error protection code to encode to feedback message, wherein in feedback fraction each respective differences error protection grade less than or equal to last feedback fraction, and transmit feedback message via antenna.
According to more on the one hand, a kind of radio station feature can be transceiver, this transceiver configuration becomes: receive the feedback message of encoding with unequal error protection, feedback message can comprise feedback fraction set, each feedback fraction has transport property value scope, transport property value realizes data rate ranges for transmitting accordingly, and feedback fraction has certain order, wherein less error protection is offered the feedback fraction associated with the transport property value that realizes high data rate more by this order, and larger error protection is offered to the feedback fraction associated with the transport property value that realizes lower data rate, feedback message is decoded, carry out link circuit self-adapting according to being decoded as subsequent transmission, and transmit subsequent transmission according to link circuit self-adapting.
According on the other hand, a kind of computer-readable medium can comprise the instruction that can be carried out by least one processor installing, and this computer-readable medium can comprise: for receiving one or more instructions of transmission; For generated one or more instructions of feedback message according to receive transmission, feedback message comprises feedback fraction, each feedback fraction is associated with the transport property can with transport property value scope, transport property value realizes data rate ranges for transmitting accordingly, and wherein each in feedback fraction can comprise the information of the communication performance that at least part of prediction may transmit, and feedback fraction has the order relevant to transport property value scope; For one or more instructions of feedback message being encoded with unequal error protection code, wherein unequal error protection grade is distributed in feedback message according to the order of feedback fraction, make compared with the feedback fraction of lower data rate is provided, provide the lower error protection of feedback fraction of high data rate to encode; And for transmitting one or more instructions of feedback message.
Brief description of the drawings
Figure 1A is the sketch that the device intercoming mutually via communication system is shown with Figure 1B;
Fig. 2 is the sketch that the exemplary components of UE in Fig. 1 is shown;
Fig. 3 is the sketch of the exemplary components of multiple-input and multiple-output (MIMO) transceiver that UE in Fig. 1 is shown;
Fig. 4 is the sketch that the exemplary components of the MIMO receiver of UE in Fig. 1 is shown;
Fig. 5 is the sketch that the demonstration realization of UE in Fig. 1 is shown, wherein UE comprises radio telephone;
Fig. 6 is the sketch that the exemplary components of installing in Fig. 1 is shown;
Fig. 7 is the sketch that the exemplary components of the MIMO transceiver installing in Fig. 1 is shown;
Fig. 8 is the sketch that the exemplary components of the MIMO reflector installing in Fig. 1 is shown;
Fig. 9 A-9C is the sketch that demonstration feedback message is shown;
Figure 10 and Figure 11 illustrate and the flow chart of concept related demonstration program as herein described; And
Figure 12 is the sketch that is illustrated in the exemplary communication of exchange between UE and device.
Embodiment
Following embodiment is with reference to accompanying drawing.Same reference numerals in different accompanying drawings can identify same or similar key element.In addition, below describe and do not limit the invention.
Term " can/can " uses in whole the application, and estimate to be for example interpreted as " have ... possibility ", " being configured to " or " can ", and do not force meaning (for example " necessary ").The key element expectation not limiting to a number or amount is interpreted as comprising for example one or more.In the situation that only estimating one, use term " one " or similar language throughout.In addition, word " according to " estimate to be interpreted as representation case as " at least partly according to ", unless otherwise expressly noted.Term "and/or" estimates to be interpreted as comprising combination in any one or more in associated column aspect and all combinations.Term " feedback message " and " feedback report " are used interchangeably in this description.
Concept as herein described relates to unequal error protection for improvement of the communication in communication system and can be inevitable from wherein producing or apparent other advantage from following description.It is the wireless network that comprises any type that communication system is estimated to be interpreted broadly, such as cellular network or mobile network (as global system for mobile communications (GSM), Long Term Evolution (LTE), Wideband Code Division Multiple Access (WCDMA) (WCDMA), Ultra-Mobile Broadband (UMB), Universal Mobile Telecommunications System (UMTS), CDMA 2000 (CDMA2000), ad hoc network, high-speed packet access (HSPA) etc.) and non-cellular network (as Wireless Fidelity (Wi-Fi), global microwave access intercommunication (WiMax) etc.).In this, understand, concept as herein described is not that platform is relevant, and can in mass communication standard, realize.Term " communication system " and " network " can exchange use in whole description.
Embodiment as herein described can consider that unequal error protection (UEP) is applied to feedback message by the mode of channel condition.As being described, feedback message can comprise the feedback parameter of the different degrees of utility with the link circuit self-adapting that depends on channel condition.In one embodiment, feedback parameter can for example, be encoded by different error protection grades according to transport property (transmission rank (rank) or number of carriers).Term " transmission rank " can for example be used for, to the quantity of the concurrent layer (data flow) of itself transmission corresponding to device request.Feedback message can comprise the transport property value corresponding with transport property.In another embodiment, feedback message can not comprise the transport property value for example, with transport property (transmission rank or number of carriers) corresponding.Feedback message can comprise the feedback parameter of the different degrees of utility with the link circuit self-adapting that depends on channel condition.Feedback parameter can be encoded by different error protection grades according to transport property.
Due to feedback scheme as herein described, can be transmitted in and change the feedback message under channel condition with larger reliability standard, it can improve again the ability of carrying out link circuit self-adapting the service quality that enhancing is provided to terminal use when received.
For the ease of discussing, MIMO communication system (for example LTE) will be described herein.Understand, concept as herein described does not depend on the communication system that adopts this particular type.
Figure 1A is the sketch that the exemplary communication system 100 that wherein can realize concept described herein is shown.As shown in the figure, communication system 100 can comprise device 105, can comprise the network 110 of device 115 and install 120.Device can comprise base station for example, UE, transponder, gateway, relaying, they combination or there is the device of any other type of communication capacity.Device 105 can be coupled to device 120 via device 115 and/or network 110 in communication.Device 105,115 and/or 120 can be carried out link circuit self-adapting, and/or can generate feedback message according to concept as herein described.
Because concept as herein described does not depend on the type of specific device in communication system 100, therefore, for the ease of discussing, will communication system 100 be described according to the demonstration plant shown in Figure 1B.Figure 1B illustrates UE105, network 110, radio station 115 and device 120.UE105 can be coupled to device 120 via network 110 in communication.For example, UE105 can be coupled with device 120 via the radio station of network 110 115 in communication.
UE105 can comprise the device that has communication capacity and be configured to UEP to be applied to transmit communication.For example, UE105 can comprise phone, computer, personal digital assistant (PDA), game device, music player, video play device, Web-browser, PCS Personal Communications System (PCS) terminal, pervasive (pervasive) calculation element and/or be configured to and carries out and other user's sets of certain type of concept related one or more functions described herein.To the ability of UE105 be described in more detail below.
Except radio station 115, network 110 also can comprise the network of one or more any types, comprises wireless network or cable network.For example, network 110 can comprise local area network (LAN) (LAN), wide area network (WAN), for example public switch telephone network (PSTN) or telephone network, satellite network, Intranet, internet or the network of public land mobile network (PLMN) or the combination of communication system.In other example, network 115 can only comprise radio station 115.
Radio station 115 can comprise having communication capacity and be configured to the device that UEP received communication is decoded.The device of any type that can communicate via wireless link and UE105 estimated to be broadly interpreted as comprising in term " radio station ".For example, radio station can comprise base station (BS), base station transceiver (BTS) (for example, in gsm communication system), eNodeB (for example, in LTE communication system), Node B (for example, in UMTS communication system), transponder, relaying or be configured to and carries out and other devices of certain type of concept related one or more functions described herein.To the ability of radio station 115 be described in more detail below.
Device 120 can comprise the device with communication capacity.For example, device 120 can comprise UE, the server of resource and/or service is provided and/or can keeps and other device of certain type of the end to end communication of UE105 via radio station 115.
Fig. 2 is the sketch that exemplary components in UE105 is shown.As shown in the figure, UE105 can comprise MIMO transceiver 205, processor 210, memory 215, input unit 220, output device 225 and bus 230.Term as used herein " assembly " is estimated to be broadly construed to comprise such as hardware, software and hardware, firmware etc.
MIMO transceiver 205 can comprise the assembly that can transmit and/or receive via multiple antenna (not shown) information in radio-frequency channel.
Processor 210 can comprise can be explained and/or the assembly of operating instruction.For example, processor 210 can comprise general processor, microprocessor, data processor, coprocessor, network processing unit, application-specific integrated circuit (ASIC), controller, programmable logic device, chipset and/or field programmable gate array (FPGA).
Memory 215 can comprise the assembly of the information of can storing (for example data and/or instruction).For example, memory 215 can comprise random access memory (RAM), dynamic random access memory (DRAM), static RAM (SRAM), Synchronous Dynamic Random Access Memory (SDRAM), ferroelectric RAM (FRAM), read-only memory (ROM), programmable read only memory (PROM), Erasable Programmable Read Only Memory EPROM (EPROM), Electrically Erasable Read Only Memory (EEPROM) and/or flash memory.
Input unit 220 can comprise and can receive the assembly of inputting from user and/or another device.For example, input unit 220 can comprise keyboard, keypad, mouse, button, switch, microphone, display and/or speech recognition logic.
Output device 225 can comprise can be to the assembly of user and/or another device output information.For example, output device 225 can comprise display, loudspeaker, one or more light-emitting diode (LED), vibrator and/or other vision of certain type, the sense of hearing and/or sense of touch output device.
Bus 230 can comprise can between the assembly of UE105 and/or among the assembly of communication is provided.For example, bus 230 can comprise system bus, address bus, data/address bus and/or control bus.Bus 230 also can comprise bus driver, bus arbiter, bus interface and/or clock.
Although Fig. 2 illustrates the exemplary components of UE105, in other is realized, compared with shown in Fig. 2, UE105 can comprise still less, additional and/or different assembly.For example, UE105 can comprise that hard disk or other computer-readable medium of certain type are together with respective drivers.Term as used herein " computer-readable medium " is estimated to be broadly construed to comprise physics or logical storage devices.Understand, one or more assemblies of UE105 can carry out with UE105 in one or more other tasks of one or more other component liaisons.
Fig. 3 is the sketch of exemplary components in MIMO transceiver 205.As shown in the figure, MIMO transceiver 205 can comprise MIMO reflector 305, MIMO receiver 310 and transmitting/receiving (TX/RX) antenna 315.MIMO reflector 305 can comprise the assembly that can upload via TX/RX antenna 315 carry information in radio-frequency channel.MIMO receiver 310 can comprise the assembly that can receive via TX/RX antenna 315 information in radio-frequency channel.TX/RX antenna 315 can comprise multiple antennas that can receive via radio-frequency channel information and the information of transmission.TX/RX antenna 315 can be coupled to MIMO reflector 305 and MIMO receiver 310 in communication.
Although Fig. 3 illustrates the exemplary components of transceiver 205, in other is realized, compared with shown in Fig. 3, transceiver 205 can comprise still less, additional or different assembly.
Fig. 4 is the sketch of the exemplary components of MIMO receiver 310 in UE105.As shown in the figure, MIMO receiver 310 can comprise reception & disposal unit 405 and comprise the feedback processing unit 410 of UEP encoder 415.
Reception & disposal unit 405 can comprise the assembly that can process reception information.For example, reception & disposal unit 405 can carry out demodulation, deinterleaving, demultiplexing, equilibrium, filtering, decoding etc. to the information receiving by radio-frequency channel.
Wherein, feedback processing unit 410 can comprise the assembly that can carry out channel estimating, transmission rank recommendation or order and CQI calculating.Feedback processing unit 410 can generate feedback message.Feedback message can comprise the information of the link circuit self-adapting of being carried out by radio station 115.
UEP encoder 415 can comprise the assembly that UEP can be applied to feedback message.Feedback processing unit 410 can be coupled to MIMO reflector 305 in communication, makes to transmit feedback message.
Although Fig. 4 illustrates the exemplary components of MIMO receiver 310, in other is realized, compared with shown in Fig. 4, MIMO receiver 310 can comprise still less, additional or different assembly.For example, feedback processing unit 410 and/or UEP encoder 415 can be comprised in MIMO reflector 305.
Fig. 5 is the sketch that the demonstration realization of UE105 is shown, wherein UE105 comprises radio telephone.As shown in the figure, UE105 can comprise (such as input unit 220) microphone 505 for inputting audio-frequency information, such as, for (output device 225) loudspeaker 510 of output audio information, such as, for (the input unit 220) keypad 515 of input message or selection function and such as, for exporting (input unit 220 and/or output device 225) display 520 of visual information and/or input message, selection function etc.
Although Fig. 5 illustrates the demonstration realization of UE105, in other is realized, UE105 can comprise still less, additional and/or different exemplary components.
Fig. 6 is the sketch that exemplary components in radio station 115 is shown.Device 120 can be configured or be configured to similar to UE105 similarly.As shown in the figure, radio station 115 can comprise MIMO transceiver 605, processor 610, memory 615 and bus 620.
MIMO transceiver 605 can comprise the assembly that can transmit and/or receive via multiple antenna (not shown) information in radio-frequency channel.Processor 610 can comprise can be explained and/or the assembly of operating instruction.For example, processor 610 can comprise general processor, microprocessor, data processor, coprocessor, network processing unit, application-specific integrated circuit (ASIC) (ASIC), controller, programmable logic device, chipset and/or field programmable gate array (FPGA).Memory 615 can comprise the assembly of the information of can storing (for example data and/or instruction).For example, memory 615 can comprise random access memory (RAM), dynamic random access memory (DRAM), static RAM (SRAM), Synchronous Dynamic Random Access Memory (SDRAM), ferroelectric RAM (FRAM), read-only memory (ROM), programmable read only memory (PROM), Erasable Programmable Read Only Memory EPROM (EPROM), Electrically Erasable Read Only Memory (EEPROM) and/or flash memory.
Bus 620 can comprise can between the assembly of radio station 115 and/or among the assembly of communication is provided.For example, bus 620 can comprise system bus, address bus, data/address bus and/or control bus.Bus 620 also can comprise bus driver, bus arbiter, bus interface and/or clock.
Although Fig. 6 illustrates the exemplary components of radio station 115, in other is realized, compared with shown in Fig. 6, radio station 115 can comprise still less, additional and/or different assembly.Understand, one or more assemblies of radio station 115 can carry out with radio station 115 in one or more other tasks of one or more other component liaisons.
Fig. 7 is the sketch of the exemplary components of MIMO transceiver 605 in radio station 115.As shown in the figure, MIMO transceiver 605 can comprise MIMO reflector 705, MIMO receiver 710 and TX/RX antenna 715.MIMO reflector 705 can comprise the assembly that can upload via TX/RX antenna 715 carry information in radio-frequency channel.MIMO receiver 710 can comprise the assembly that can receive via TX/RX antenna 715 information in radio-frequency channel.TX/RX antenna 715 can comprise multiple antennas that can receive via radio-frequency channel information and the information of transmission.TX/RX antenna 715 can be coupled to MIMO reflector 705 and MIMO receiver 710 in communication.
Although Fig. 7 illustrates the exemplary components of transceiver 605, in other is realized, compared with shown in Fig. 7, transceiver 605 can comprise still less, additional or different assembly.
Fig. 8 is the sketch of the exemplary components of MIMO reflector 705.As shown in the figure, MIMO reflector 705 can comprise transmitting processing unit 805 and comprise the feedback processing unit 810 of UEP decoder 815.
Transmitting processing unit 805 can comprise the assembly that can process for the information transmitting.For example, the information that transmitting processing unit 805 can be treated transmission modulates, interweaves, multiplexing, balanced, filtering, coding etc.Transmitting processing unit 805 can be carried out link circuit self-adapting according to the explanation to received feedback message.
Feedback processing unit 810 can comprise the assembly that can explain feedback message.Feedback processing unit 810 can be coupled to MIMO receiver 710 in communication, to receive feedback message for explaining.
UEP decoder 815 can comprise the assembly that can decode to being applied to the UEP of feedback message.
Although Fig. 8 illustrates the exemplary components of MIMO reflector 705, in other is realized, compared with shown in Fig. 8, MIMO reflector 705 can comprise still less, additional or different assembly.For example, feedback processing unit 810 and/or UEP decoder 815 can be comprised in MIMO receiver 710.
As previously described, UE105 can generate feedback message, and sends feedback message to radio station 115.Radio station 115 can be carried out link circuit self-adapting according to the feedback message receiving.Term as used herein " feedback message " is estimated to be broadly construed to the transfer of data/receiving element that comprises any type, comprising datagram, grouping, frame, cell (cell) or piece.Described below is the demonstration feedback message with UEP.For the ease of discussing, suppose that UE105 generates the feedback message with regular length.But in other is realized, this may be really not so.For example, UE105 can generate the feedback message with variable-length according to for example channel condition.That is to say, in the situation that the high and transmission rank of channel path loss is low, low with channel path loss, transmission rank is high and can comprise the CQI of greater number in feedback message time compared with, feedback message can comprise still less CQI and have accordingly less length.But, still can be according to concept application unequal error protection as herein described.
Fig. 9 A is the sketch that demonstration feedback message 900 is shown.As shown in the figure, feedback message 900 can comprise that part M (0) is to M (r_max).M part can comprise feedback parameter.For example, feedback parameter can comprise transmission recommendation or transmission command.Transmission recommendation or transmission command can comprise the transmission characteristic information of CQI and/or other type.Feedback message can comprise other parameter and/or feedback fraction in addition, for example transport property value, as transmission rank.Term " transmission rank " can comprise that for example UE105 recommends and orders to the quantity of simultaneous streaming or the layer of itself transmission.
Understand, although supposition UE105 can generate the feedback message 900 with regular length, M (0) can not have each self-contained feedback parameter to M (r_max).For example, if transmission rank 1 is determined in the feedback processing unit of UE105 410, feedback processing unit 410 can for example, calculate CQI to one deck (part M (0)) only.That is to say, part M (1) can not comprise the useful information for link circuit self-adapting to M (r_max).For example, part M (1) can comprise useless (garbage) value to M (r_max).In this, these values are not useful to carrying out link circuit self-adapting.In other is realized, this may be really not so.For example, in the time that feedback message 900 has variable-length, blank value can not exist.In addition, feedback message 900 can comprise the CQI of more than one transmission rank and omit transmission rank and recommend or order, and thus transmission rank is selected to leave for completely radio station.
UEP encoder 415 can be encoded to feedback message 900 with UEP.As shown in the figure, each M part of feedback message 900 can have corresponding error protection grade (for example F (0) is to F (r_max)).For example, F (0) to the error protection grade of F (r_max) can be corresponding to F (0) > F (1) ... > F (r_max).That is to say, part M (0) can have the error protection grade higher than part M (1), and part M (2) can have the error protection grade higher than part M (3), etc.The M part with the error protection grade higher than another M part can provide the larger possibility while there is random error during the transmission, the information bit in this M part being correctly decoded.In other is realized, wherein, part M (0) can distribute according to the feedback parameter wherein comprising by different way to the error protection grade of M (r_max).
An example of transport property is transmission rank.Conventionally, for example,, when channel path loss high (, low signal-to-noise ratio (SNR), signal-to-jamming ratio (SIR), signal to interference plus noise than (SINR) etc.), transmission rank is low.Other factors can be indicated low transmission order, the channel condition information of for example geometric size (for example arriving the distance of radio station 115) and/or other type, as reciprocal (reciprocal) channel parameter (, the relevant parameter of essence between the up link of UE105 and down link).For example, low geometric size can be converted into stronger interference (for example low SIR).On the contrary, in the time that channel path loss is low, transmission rank is conventionally high.In this, different from existing feedback scheme, advantageously utilize transmission rank and be applied to the relation existing between the error protection grade of M part in feedback message 900.That is to say, UEP can be applied to feedback message 900, making to provide than the higher error protection grade of M part that does not comprise (useful) information to the M part that comprises (useful) information.
According to described these hypothesis and/or relation, when UE105 recommends or when order low transmission order, conventionally in feedback message 900, need to recommend or higher error protection grade when order high-transmission order than UE105.Therefore, in feedback message, need than the error protection grade higher with the related feedback fraction of high-transmission order with the related feedback fraction of low transmission order.For example, if feedback fraction M (0) is relevant with transmission rank 1, and M (1) is relevant with transmission rank 2, the error protection grade that M (0) need to be higher than M (1).Therefore,, by feedback message 900 is applied to UEP encoding scheme, can make the average probability of error minimum of useful feedback fraction.
According to these concepts, in feedback message 900, can provide the highest error protection grade to transmitting corresponding information bit with single order in (M) part.But, understand, in the time that transmission rank is greater than 1, feedback message 900 can comprise single CQI.For example, if UE105 comprises linear MIMO receiver, and adopt the large cyclic delay diversity (CDD) that postpones, effective CQI of whole layers used can be identical, because for example, can interweave on whole space dimensionalities used from the data (symbol) of each layer.But if UE105 comprises the receiver of successive interference cancellation type (SIC), the CQI of decoded layer can increase subsequently.Therefore, may need multiple CQI and UEP.
Fig. 9 B is the sketch that the feedback message 900 that comprises the feedback fraction of demonstrating is shown.Part M (0) can comprise CQI or blank value according to transport property value separately to M (r_max).Transport property value can be comprised in feedback message 900.For example, be 1 if transport property is transmission rank and transmission rank value, part M (0) can comprise the CQI for the stream corresponding with transmission rank 11, and part M (1) can comprise blank value to M (1_max).In another case, feedback message 900 can comprise transmission rank value 2.In this case, part M (0) can comprise the CQI for the stream corresponding with transmission rank 21, and part M (1) can comprise the CQI for the stream corresponding with transmission rank 22.Part M (2) can comprise blank value to M (r_max).Therefore, in this feedback scheme, part M (0) to the content of M (r_max) can such as, based on transport property value (transmission rank, number of carriers etc.).Understand, in the time that for example feedback message 900 has variable-length, blank value can not be comprised in feedback message 900.More the feedback fraction content of high-transmission order value is similar.In the example of Fig. 9 B, M (0) and transport property (order) value 1,2 ... scope association (r_max+1), because the content of feedback fraction is applicable to all these transport property values.Similarly, for M (i), wherein i=2 ... r_max, M (1) and value 2,3 ..., the scope association of (r_max+1) etc.This illustrates the ordered set of feedback fraction because the minimum in the transport property value scope of M (0), 1 lower than the minimum in the property value scope of M (1), 2, for subsequent feedback part, the rest may be inferred.
Fig. 9 C is the sketch that the feedback message 900 that comprises another demonstration feedback parameter set is shown.Such as, but with Fig. 9 B contrast, feedback message 900 can not comprise transport property value (transmission rank, number of carriers etc.).But, part M (0) to the content of M (r_max) can be based on transport property.For example, suppose that UE105 provides the CQI of transmission rank 1 and 2 (being r_max=1) to recommend.In this case, part M (0) can comprise the CQI for the stream associated with transmission rank 11, and part M (1) can comprise for flowing 1 CQI and the CQI of the stream 2 for can be associated with transmission rank 2.In this example, radio station 115 can be selected using transmission rank 1 or use between transmission rank 2 because it for by feedback message 900 can with two kinds of situations all there is CQI.In this example, M (0) is for example, with the scope (this scope only comprises a value) of transmission rank value 1 associated, because the content of M (0) is only transmitted applicable to order 1.Similarly, M (1) is for example, with the scope (this scope only comprises a value) of transmission rank value 2 associated, because the content of M (1) is only transmitted applicable to order 2.This illustrates the ordered set of feedback fraction because the minimum in the transport property value scope of M (0), 1 lower than the minimum in the transport property value scope of M (1), 2.
Although describe feedback message 900 with reference to the CQI of different layers, concept as herein described has application widely.For example, UEP can be applicable to any feedback parameter that can be based on every layer of report.Therefore, can provide the error protection grade higher than other feedback parameter to being considered to prior any feedback parameter at for example channel path loss Gao Shike.Similarly, can provide the error protection grade lower than other feedback parameter to can be considered to not too important any feedback parameter in the time that for example channel path loss is low.
Although Fig. 9 A-9C illustrates demonstration feedback message 900, in other is realized, compared with described, that feedback message 900 can comprise is additional, difference or feedback parameter and/or feedback fraction still less.As a supplement or substitute, in other is realized, the distribution of unequal error protection can be different.
Figure 11-12 relate to can with concept related demonstration program described herein.Figure 10 illustrates to be to generate the demonstration program that feedback message 900 is carried out by UE105.Figure 11 illustrates the demonstration program that can be carried out for the link circuit self-adapting based on feedback message 900 by radio station 115.Figure 12 illustrates the demonstration exchange of the transmission that can comprise feedback message 900 between UE105 and radio station 115.
Figure 10 illustrates the flow chart that can be used for the demonstration program 1000 that generates feedback message 900.Process 1000 can start from receiving signal transmission (frame 1005).For example, with reference to Figure 12, radio station 115 can transmit the first transmission 1205 to UE105.UE105 can receive the first transmission 1205.
Get back to Figure 10, channel condition can be determined (frame 1010) according to the signal transmission receiving.Channel estimating can be carried out according to the first transmission 1205 in the feedback processing unit 410 of UE105.For example, feedback processing unit 410 can calculate the channel condition information of SIR, SNR, SINR estimation and/or other type, to determine channel condition.
Feedback parameter can be determined according to channel condition (frame 1015).For example, feedback parameter can be determined according to channel condition in feedback processing unit 410.As previously described, feedback parameter can comprise the transmission characteristic information of for example transport property (for example transmission rank, the number of carriers that will transmit), CQI and/or other type.
Can generate the feedback message (frame 1020) that comprises feedback parameter.Feedback processing unit 410 can insert feedback parameter in feedback message 900.For example, feedback processing unit 410 can generate feedback message 900, to comprise transport property value and corresponding CQI (for example, previously described in Fig. 9 B).Alternatively, feedback processing unit 410 can generate feedback message 900, to comprise the CQI (for example, previously described in Fig. 9 C) for multiple transport property values.
Feedback message can encode with unequal error protection code (frame 1025).The UEP encoder 415 of UE105 can carry out unequal error protection to feedback message 900.For example, as previously, in conjunction with as described in Fig. 9 A-9C, feedback message 900 can comprise that M (0) was to M (r_max) part.In other is realized, feedback message 900 can have variable-length, and (M) quantity of part can change, as previously described.
The distribution of UEP can have feedback parameter in feedback message 900 layout and/or sequence between relation.As a supplement or substitute, the error protection grade that offers each parameter in feedback message 900 can be based on for example transport property.In one implementation, the distribution of UEP can be fixed.For example, with reference to Fig. 9 B, M part can have fixing UEP grade separately, and irrelevant with its value.These concepts are applicable to the feedback message 900 of fixing or variable-length.
Can transmit feedback message (frame 1030).UE105 can send feedback message 900 to radio station 115 via MIMO transceiver 205, as transmitted as shown in the of 1210 by transmitting feedback message in Figure 12.
Although Figure 10 illustrates demonstration program 1000, in other is realized, can carry out still less, add and/or different operations.For example, process 1000 can comprise the definite information different from channel condition information, such as precoding information, wave beam formation information etc.Feedback message 900 can comprise this additional information.
Figure 11 illustrates the flow chart that can be used for carrying out according to the feedback message 900 of unequal error protection the demonstration program 1100 of link circuit self-adapting.Process 1100 can start from receiving feedback message (frame 1105).For example, with reference to Figure 12, radio station 115 can transmit 1210 reception feedback messages 900 via feedback message.
With reference to Figure 11, can be to decode with the feedback message that UEP code is encoded (frame 1110).The UEP decoder 815 of radio station 115 can be decoded to feedback message 900.
Feedback parameter (frame 1120) in soluble feedback message.The feedback parameter comprising in the soluble feedback message 900 in feedback processing unit 810 of radio station 115.Because the feedback fraction comprising in feedback message 900 is encoded with UEP, so in one implementation, radio station 115 can form differently with existing scheme the explanation of feedback message.For example, radio station 115 can form explanation according to the weighted scale corresponding with error protection grade (scale).In this, compared with thering is the feedback parameter of lower error protection grade, can carry out more heavily weighting to the feedback parameter that provides higher error protection grade.Comprise in the example of M part without useful value at feedback message 900, can ignore these parts.In one implementation, the M part without useful value can be identified according to value itself and/or transmission rank in feedback processing unit 810.
Subsequent transmission can be carried out adaptation (frame 1125) according to the explanation of feedback message.Transmit the subsequent transmission that processing unit 805 can be fitted to according to the explanation of the feedback parameter comprising in feedback message 900 UE105.For example, transmitting processing unit 805 can adopt adaptive modulation and coding (AMC) and/or other signal and protocol parameter to improve data throughout.For example, transmit processing unit 805 and can select suitable modulation scheme, pre-coding scheme etc. according to feedback message 900.
Can transmit subsequent transmission (frame 1130).Radio station 115 can send subsequent transmission to UE105 via transceiver 605, as transmitted as shown in the of 1215 by transmitting second in Figure 12.
Although Figure 11 illustrates demonstration program 1100, in other is realized, can carry out still less, add and/or different operations.
Different from existing solution, concept as herein described utilizes transport property, as transmission rank and be applied to contacting between the error protection grade of different piece in feedback message.Therefore, and compare with related other feedback parameter of high-transmission property value more, the feedback parameter associated with low transmission property value can be subject to error protection more.
Understand, the application of concept described herein can expand to other communication system.For example, in multicarrier (MC) system, as in to the expansion of WCDMA system, the quantity of carrier frequency can be corresponding to the space layer in mimo system by analogizing.In addition, the CQI of different frequency can be by analogizing the CQI corresponding to different spaces layer in mimo system.The quantity of space layer in number of carriers and mimo system (being transmission rank) is the example of transport property.Correspondingly, in MC system, due to system complexity or other reason, independently there is identical control with the quantity of institute scheduling carrier wave and/or feedback channel can be favourable.If channel condition is good, the quantity of carrier wave used can be higher, and if channel condition is bad, the quantity of carrier wave used can be lower.Therefore, compare with the feedback fraction corresponding with transmission on most carrier waves, the feedback fraction corresponding with transmission on minority carrier wave can need higher error protection grade.
Precoding is the popular technique being combined with multi-antenna transmission.Basic ideas are to mix and assigned modulation symbol on antenna, may consider current channel condition simultaneously.This often realizes by information being carried to the selected matrix multiple of symbolic vector and match channels.Symbolic vector comprises modulation symbol.Therefore, symbolic vector sequence forms parallel symbol adfluxion and closes, and each this symbol stream is known as layer.Therefore, depend on that precoder selects, layer can be directly corresponding to certain antenna, or it can be assigned to some antennas via precoder mapping.Precoding is one of crucial MIMO technology in LTE.In two-forty multi-antenna transmission field, one of most important properties of channel condition is so-called channel sequence.Roughly, channel sequence can change to the minimum number that transmits and receives antenna from one, is expressed as r here
max.Taking 4 × 2 systems, the system with four transmitting antennas and two reception antennas is as example, maximum channel order thereby be two.Channel sequence changes in time, because fast-fading changes channel coefficients.In addition, it determines the number of plies that can successfully carry out concurrent transmission.Therefore,, if channel sequence is one in the moment of two-layer transmission, exists with these two-layer two corresponding signals and will disturb to obtain so high likelihoods that make to detect mistakenly at receiver these two layers more.
In order to make to transmit the channel condition that is applicable to variation, receiver can pass through the efficient channel quality of CQI (CQI) to each layer of reflector report (feedback).Making, the quantity of transport layer is applicable in the communication system of channel sequence, and receiver report is for the CQI of the layer of variable number.But, in fact, make the length of feedback report change and often be considered to infeasible (note, feedback report can comprise the out of Memory except CQI, the selection of for example pre-encoder matrix) with channel condition.But, in feedback report, be the layer r of maximum quantity
maxcQI retain position.
In the existing solution of every layer of CQI of employing, feedback report comprises r all the time
maxindividual CQI.
Although it should be noted that from the term of 3GPP LTE and be used in this application illustrating the present invention,, this should not regard as the scope of the invention is only confined to said system.Other wireless system that comprises WCDMA, HSPA, WiMax, GSM, UMB also can benefit to utilize the thinking containing in the disclosure.
In existing solution, feedback report process chnnel coding, and do not consider that the more required feedback message of high-transmission order needs less protection.Therefore, existing solution is not utilized contacting between transmission rank r and error protection needs.
According to the present invention, use unequal error protection (UEP) channel code, to higher error protection is given in path loss high (low SNR) or geometric size prior feedback or control signal part when low.Similarly, give at path loss low (high SNR) or the geometric size lower error protection of prior feedback fraction when high.
Use a CQI report example as feedback, the present invention is in the time that the quantity of institute's requesting layer is low and realize strong CQI error protection by making to have the highest protection corresponding to the information bit of r=1 in the time that possible path loss is high.In the time of r=1, the information bit corresponding with the CQI that does not use layer do not carried any useful information.Therefore the mistake on these does not affect.Along with increasing continuously r, give lower continuously error protection to the position corresponding with the CQI of add layer.By application UEP coding, can make average layer CQI error probability minimum.
When channel sequence is greater than for the moment, also can there is the use of single CQI.For example, change with linear MIMO receiver and be combined with if postpone greatly CDD or stratification, effective CQI of all layers used is identical, because interweave on all space dimensionalities used from the symbol of each layer.But if use the receiver of successive interference cancellation (SIC) type, the CQI of follow-up decoded layer/code word will increase.Therefore need extra signaling bit for supporting SIC, and those positions are without strong protection.This is the additional motivation to the higher error protection grade one of in CQI.
The present invention is not limited to the UEP coding of the CQI to different layers.UEP principle is also effective for other parameter of every layer of report.In addition this principle can be generalized to beyond the parameter contacting with space layer.
Can use another example of propose invention is in multicarrier (MC) system, if current WCDMA system is in the expansion of multiple carrier waves.In this case, the quantity of carrier frequency has the implication identical with space layer in mimo system.In this MC situation, the CQI of different frequency will arrange the CQI of middle different spaces layer corresponding to MIMO.In this MC system, due to system complexity or other reason, independently there is identical control with the quantity of institute scheduling carrier wave or feedback channel can be favourable.Therefore,, if scheduling is less than the carrier wave of maximum quantity, do not need the control information of non-scheduled carrier wave.Therefore, do not need (or seldom needing) error protection for those positions.By the principle described in application the present invention, can keep identical control channel structure, and no matter the quantity of carrier wave used.
By following detailed description of the present invention, other object of the present invention, advantage and novel feature will be apparent.
This trifle is described the concrete example that the invention that provides is provided in more detail.But it should be noted that this is not to limit the scope of the invention.
If r≤r
maxrepresent that receiver feeds back the number of plies for information about.If r=r
max, receiver request/recommendation full rank transmission.If r=1, receiver request individual layer transmission.R in feedback report
maxin individual CQI, only r (suppose every layer of CQI, also can use the scheme with less CQI) comprises useful information.Reasonably hypothesis is, when low with r compared with, to error protection in the time that r is high need to be lower.This is that for example, the more required feedback message of high-transmission order need to still less be protected because in the time that receiver more approaches reflector (center of housing estate).For example, in the time of channel path loss low (high SNR) or geometric size high (comprising less interference), (high-transmission order is r) more favourable for multilayer transmission.In the time of high (the low SNR) of path loss or low geometric size (comprising more strong jamming), in the time that receiver is often illustrated in cell edge away from reflector, in the time considering cellular system, individual layer transmission (r=1) more likely.Suppose that path loss is reciprocal between up link and downlink channel, when r low (low SNR), the needs of the error protection to feedback report are conventionally higher.Similarly, when r high (high SNR), the needs of the error protection to feedback report are conventionally lower.
If M
0represent not comprise in feedback report the part of layer customizing messages.If A represents M
0the quantity of middle information bit.If M
irepresent in feedback report corresponding to i layer (1≤i≤r
max) part, be more particularly the CQI of layer i.If M
ifor b
iposition and
feedback report comprises C=A+B information bit altogether.Do not change and illustrate with r by supposition A and B.Due to actual cause, feed back whole B position, even if r < is r
max.As r < r
maxtime, the C position feedback message of not encoding only comprises
useful information position, because M
r+1, K,
do not carry useful information.Whether receiving mistakenly these does not use position unimportant.For error protection is D bits of coded by C position feedback report chnnel coding.
In existing solution, all C information bits are carried out to chnnel coding with equal error protection to feedback report.For example, if t or mistake still less in transmitted D bit word, occur, " t error correction binary code " will decode to correct feedback report.Therefore, the problem of existing equal protection solution is, in the time that error protection needs most (for example, high path loss/geometric size and common low r), with M used
0, K, M
ridentical protection class is not to using M
r+1, K,
encode.
For improving overall CQI error performance, use unequal error protection (UEP) code.UEP code is well-known and is studied in the literature, for example, referring to Masnick B., " On linear unequal error protection codes " (IEEE Transactions on Information Theory of Wolf J., vo1.3, no.4, 600-607 page, in October, 1967), and Boyarinov I.M., " Linear unequal error protection codes " (IEEE Transactions on Information Theory of Katsman G.L., vo1.37, no.2, 168-175 page, in March, 1981), thereby here provide no longer in detail.In brief, UEP code is to information word
in different digital realize unequal error protection characteristic.
With reference to Fig. 9 A, the principle that the present invention applies is shown again.C=A+ ∑ b
ithe long feedback report of information bit, through coding, for example makes
wherein f
1m
1error protection grade.In the time that random error appears in D bit word, higher error protection grade represents that information bit more may be correctly decoded.Depend on M
0content, f
0comparable f
1higher or lower.But, f
0should be greater than f
2.
Feedback report is limited to not bits of coded and D bits of coded of C.The present invention distributes error protection between low transmission order r situation and high-transmission order r situation, and the out of Memory transmitting while making the useful information of low r higher than r is subject to more protections.This is subject to the inspiration that contacts between low transmission order r and higher error protection needs.In context more generally, advantage of the present invention is to utilize following true ability: some part of feedback message is conventionally mainly useful to higher geometric size/lower path loss, and the condition of wherein carrying the reverse chain channel of feedback message is also tending towards better.
Certainly,, in the situation that not deviating from fundamental characteristics of the present invention, the present invention can realize by being different from the concrete alternate manner proposing herein.Current embodiment will be counted as illustrative and not restrictive in all respects.
The above description realizing furnishes an explanation, but is not intended to limit or realization is confined to disclosed precise forms.According to above-mentioned instruction, modifications and changes are possible, or can obtain from implementing this instruction.
In addition, although for the process prescription shown in Figure 10 and Figure 11 frame series, the order of frame other realize in can be modified.In addition, irrelevant frame can executed in parallel.In addition, can omit one or more frames.It is also understood that, the process shown in Figure 10 and Figure 11 and/or other process as herein described can be carried out according to the instruction of storing on computer-readable medium.
Obviously, aspect as herein described can be by many multi-form realization of the software in realization shown in the drawings, firmware and hardware.Do not limit the present invention for actual software code or the special control hardware of realizing these aspects.Therefore, not with reference to specific software code, the operation of these aspects and behavior-should be understood that software and control hardware can be designed to realize these aspects according to description are not herein described.
Even if record and/or disclose concrete Feature Combination in specification in claims, but these combinations are not intended to limit the present invention.In fact, many these features can by claims, do not have concrete record and/or this specification in no specific disclosure of mode combine.
Should emphasize, the term using in this manual " comprises " or " comprising " brought and represent to have described feature, integer, step or an assembly; But do not get rid of existence or add one or more further features, integer, step, assembly or above-mentioned every group.
The key element using in the application, action or instruction should be interpreted as to as herein described realize most important or essential, unless carried out such clearly stating.
Claims (26)
1. the method that feedback information is provided for the device (105) by associated with wireless network (100), is characterized in that:
Receive (1005) transmission via the receiver of device (105);
Generated (1010 according to receive transmission, 1015, 1020) feedback message (900), described feedback information comprises the ordered set of feedback fraction, each feedback fraction has relation with the transport property can with transport property value scope, wherein with for transmitting compared with the more low transmission property value of the lower maximum data rate of realization, larger transport property value is for may transmit the higher maximum data rate of realization, described data rate is corresponding to the payload size that may transmit, and wherein define the ordered set of described feedback fraction, make the first feedback fraction in the ordered set of described feedback fraction minimum in transport property value scope each in described feedback fraction be greater than the minimum in the transport property value scope of last feedback fraction in described ordered set, and the relation between each feedback fraction and described transport property value scope makes the one or more information that comprise in described feedback fraction, described information is predicted the communication performance that may transmit with the characteristic corresponding with any transport property value in described transport property value scope at least partly,
The unequal error protection code that use provides multiple error protection grades is to described feedback message encode (1025), wherein except described the first feedback fraction, the error protection grade of each feedback fraction is less than or equal to the error protection grade of described last feedback fraction, and described error protection grade is unequal for all feedback fractions of described ordered set; And
Transmit (1030) described encoded feedback message,
Wherein, give the value that described feedback fraction is corresponding with data flow particular channel quality indicator value, the described data flow particular channel quality indicator value as indicated transmission rank parameter of channel condition has different error protection grades separately.
2. the method for claim 1, wherein described receiver comprises multiple-input and multiple-output receiver.
3. the method for claim 1, wherein described feedback message has regular length, thereby comprises the feedback fraction of the fixed qty that belongs to described ordered set.
4. the method for claim 1, wherein one or more in the ordered set of described feedback fraction comprise the one or more respective streams particular channel quality indicators corresponding with one or more transport property values.
5. the method for claim 1, wherein one or more comprising and the related one or more CQIs of described transport property in the ordered set of described feedback fraction, described transport property comprises transmission rank.
6. the method for claim 1, wherein described transport property one of comprises in the quantity of transmission rank or carrier frequency to be transmitted.
7. method as claimed in claim 6, wherein, described feedback message comprises the single transport property value of described transport property value scope.
8. method as claimed in claim 7, wherein, if described single transport property value corresponding to maximum transmitted property value, in the ordered set of described feedback fraction, last feedback fraction of one or more feedback fractions has minimum error protection grade.
9. method as claimed in claim 6, wherein, described feedback message does not comprise the transport property value of described transport property value scope.
10. method as claimed in claim 9, wherein, described feedback fraction comprises that the each and different transport property values in information one or more have relation.
11. methods as claimed in claim 10, wherein, described transport property value scope only comprises a value.
12. methods as claimed in claim 10, wherein, the each CQI that comprises varying number in described one or more in described feedback fraction.
13. the method for claim 1, wherein described device comprise subscriber equipment.
14. 1 kinds provide the method for link circuit self-adapting, it is characterized in that for the device (115) by associated with wireless network (100):
Receive the feedback message (900) that encode with unequal error protection code (1105), described feedback message comprises the ordered set of feedback fraction, each feedback fraction has relation with the transport property can with transport property value scope, wherein the first feedback fraction in the ordered set of described feedback fraction, the error protection grade of each feedback fraction is less than or equal to the error protection grade of last feedback fraction in the ordered set of described feedback fraction, and described error protection grade is unequal for the ordered set of described feedback fraction;
To described feedback message decode (1110);
Carry out link circuit self-adapting (1120,1125) according to the subsequent transmission that is decoded as to described feedback message; And
According to the described subsequent transmission of described link circuit self-adapting transmission (1130),
Wherein, give the value that described feedback fraction is corresponding with data flow particular channel quality indicator value, the described data flow particular channel quality indicator value as indicated transmission rank parameter of channel condition has different error protection grades separately.
15. methods as claimed in claim 14, wherein, the execution of described link circuit self-adapting comprises the feedback fraction of according to unequal error protection code, different weights being distributed to described feedback message.
16. methods as claimed in claim 15, wherein, described feedback fraction comprises CQI.
17. methods as claimed in claim 14, wherein, described feedback message comprises described transport property, described transport property comprises transmission rank or one of will transmit in the quantity of carrier frequency at least.
18. methods as claimed in claim 14, wherein, described feedback fraction one of does not comprise in described transport property value scope.
Device (105) in 19. 1 kinds of communication systems, is characterized in that:
Transceiver (205), is configured to:
Receive (310) transmission from another device;
Generate the feedback message (900) that (410) comprise feedback fraction set, each feedback fraction has relation with the transport property can with transport property value scope, correspondingly described transport property value realizes data rate ranges for transmitting, and each in wherein said feedback fraction can comprise the information of predicting the described communication performance that may transmit, and described feedback fraction has certain order, less error protection is offered the feedback fraction associated with the transport property value that realizes high data rate more by wherein said order, and larger error protection is offered to the feedback fraction associated with the transport property value that realizes lower data rate,
Use unequal loss protection code to encode (415) to described feedback message, respective differences error protection grade each in wherein said feedback fraction is less than or equal to last feedback fraction; And
Transmit described feedback message via antenna (315),
Wherein, give the value that described feedback fraction is corresponding with data flow particular channel quality indicator value, the described data flow particular channel quality indicator value as indicated transmission rank parameter of channel condition has different error protection grades separately.
20. devices as claimed in claim 19, wherein, the different transport property values in the each and described transport property value scope in described feedback fraction have relation.
21. devices as claimed in claim 19, wherein, the identical traffic property value in multiple described feedback fractions and described transport property value scope has relation.
22. devices as claimed in claim 19, wherein, described feedback message does not comprise any transport property value of described transport property value scope.
23. devices as claimed in claim 22, wherein, predict that the information of the described communication performance that may transmit is corresponding to one or more CQIs, and each CQI that comprises varying number in described feedback fraction.
24. devices as claimed in claim 19, wherein, described device comprises subscriber equipment, and described another device comprises base station.
25. 1 kinds of radio stations (115), is characterized in that:
Transceiver (605), is configured to:
Receive the feedback message (900) that encode with unequal error protection (710), described feedback message comprises feedback fraction set, each feedback fraction has relation with the transport property can with transport property value scope, correspondingly described transport property value realizes data rate ranges for transmitting, and wherein said feedback fraction has certain order, less error protection is offered the feedback fraction associated with the transport property value that realizes high data rate more by wherein said order, and larger error protection is offered to the feedback fraction associated with the transport property value that realizes lower data rate,
To described feedback message decode (815);
Carry out link circuit self-adapting (805,810) according to the described subsequent transmission that is decoded as; And
Transmit (705) described subsequent transmission according to described link circuit self-adapting,
Wherein, give the value that described feedback fraction is corresponding with data flow particular channel quality indicator value, the described data flow particular channel quality indicator value as indicated transmission rank parameter of channel condition has different error protection grades separately.
Device in 26. 1 kinds of communication systems, comprising:
For receiving the parts of (1005) transmission;
For generated the parts of (1020) feedback message (900) according to receive transmission, described feedback message comprises feedback fraction, each feedback fraction is associated with the transport property can with transport property value scope, correspondingly described transport property value realizes data rate ranges for transmitting, and the each information that can comprise the described communication performance that may transmit of at least part of prediction in wherein said feedback fraction, and described feedback fraction has the order relevant to described transport property value scope;
For with unequal error protection code to the encode parts of (1025) of described feedback message, wherein unequal error protection grade is distributed in described feedback message according to the order of feedback fraction, makes to provide the lower error protection of feedback fraction of high data rate to encode compared with the feedback fraction of lower data rate is provided; And
For transmitting the parts of (1030) described feedback message; wherein; give the value that described feedback fraction is corresponding with data flow particular channel quality indicator value, the described data flow particular channel quality indicator value as indicated transmission rank parameter of channel condition has different error protection grades separately.
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| PCT/SE2008/050958 WO2009088336A1 (en) | 2008-01-11 | 2008-08-25 | Feedback with unequal error protection |
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| JP5036869B2 (en) * | 2008-06-23 | 2012-09-26 | シャープ株式会社 | Mobile station apparatus, communication system and communication method |
| US8130667B2 (en) | 2008-09-19 | 2012-03-06 | Texas Instruments Incorporated | Preamble group selection in random access of wireless networks |
| KR101530559B1 (en) * | 2009-06-04 | 2015-06-22 | 삼성전자 주식회사 | Method and Apparatus for receiving and transmitting feedback information for CoMP operations in wireless communication cellular systems |
| KR101534865B1 (en) | 2009-06-23 | 2015-07-27 | 엘지전자 주식회사 | Method of performing link adaptation procedure |
| EP2478656B1 (en) | 2009-09-15 | 2016-01-27 | Nokia Solutions and Networks Oy | Mobile communication device, network node and computer readable medium for coordinated multipoint transmission |
| WO2012034281A1 (en) * | 2010-09-16 | 2012-03-22 | Huawei Technologies Co., Ltd. | Feedback information relating to a mobile communications system using carrier aggregation |
| US9209932B2 (en) * | 2010-11-08 | 2015-12-08 | Qualcomm Incorporated | CQI-only transmission on the PUSCH |
| KR101652216B1 (en) * | 2011-06-29 | 2016-08-29 | 후지쯔 가부시끼가이샤 | Downlink control signalling for indication of interfering layers |
| JP5766365B2 (en) * | 2012-03-27 | 2015-08-19 | エヌイーシー（チャイナ）カンパニー， リミテッドＮＥＣ（Ｃｈｉｎａ）Ｃｏ．，Ｌｔｄ． | Method and apparatus for outer loop link adaptation in a wireless communication system |
| US9219569B2 (en) * | 2013-03-09 | 2015-12-22 | Qualcomm Incorporated | Method and apparatus for optimizing rate control based on packet aggregation considerations |
| KR102083352B1 (en) * | 2013-07-03 | 2020-03-03 | 삼성전자주식회사 | Apparatus and method for formating virtual cell in a virtual cell network system |
| US10013701B2 (en) * | 2013-10-09 | 2018-07-03 | Selligent, Inc. | System and method for managing message campaign data |
| US10469204B2 (en) * | 2017-01-09 | 2019-11-05 | Mediatek Inc. | Techniques of CSI feedback with unequal error protection messages |
| WO2024007224A1 (en) * | 2022-07-06 | 2024-01-11 | 华为技术有限公司 | Feedback-based adaptive transmission method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1211837A1 (en) * | 2000-12-04 | 2002-06-05 | Telefonaktiebolaget Lm Ericsson | Unequal error protection in a packet transmission system |
| CN101009688A (en) * | 2006-01-23 | 2007-08-01 | 华为技术有限公司 | A method for loading and transferring packet voice |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6405338B1 (en) * | 1998-02-11 | 2002-06-11 | Lucent Technologies Inc. | Unequal error protection for perceptual audio coders |
| JP3728578B2 (en) * | 1999-03-31 | 2005-12-21 | 富士通株式会社 | Non-uniform error protection method in multi-carrier transmission and its encoder and decoder |
| US6876641B2 (en) * | 2000-04-14 | 2005-04-05 | Via Telecom Co., Ltd. | Fast feedback channel with flexible bit reliability for wireless communications |
| KR100547848B1 (en) * | 2002-01-16 | 2006-02-01 | 삼성전자주식회사 | Method and apparatus for transmitting and receiving status information of forward channel in multiple carrier mobile telecommunication system |
| KR100879942B1 (en) * | 2002-02-16 | 2009-01-22 | 엘지전자 주식회사 | CQI coding method using various basis sequences |
| US20050063314A1 (en) * | 2003-09-19 | 2005-03-24 | Zafer Sahinoglu | Method and system for content aware and energy efficient transmission of videos and images |
| KR100589680B1 (en) * | 2004-07-26 | 2006-06-19 | 한국전자통신연구원 | Sending method and sending apparatus, receiving method and receiving apparatus for signal of mobile telecommunication system |
| US7856584B2 (en) | 2005-03-30 | 2010-12-21 | Intel Corporation | Unequal error protection apparatus, systems, and methods |
| WO2007015292A1 (en) | 2005-08-02 | 2007-02-08 | Mitsubishi Denki Kabushiki Kaisha | Communication device, and radio communication system |
| US8006168B2 (en) * | 2005-12-19 | 2011-08-23 | Amimon Ltd | Apparatus and method for applying unequal error protection during wireless video transmission |
| KR101063373B1 (en) * | 2006-10-02 | 2011-09-07 | 인터디지탈 테크날러지 코포레이션 | Method and apparatus for encoding channel quality indicator bits and precoding control information bits |
-
2008
- 2008-08-25 EP EP08869267A patent/EP2229743B1/en not_active Not-in-force
- 2008-08-25 US US12/812,259 patent/US9112647B2/en not_active Expired - Fee Related
- 2008-08-25 WO PCT/SE2008/050958 patent/WO2009088336A1/en active Application Filing
- 2008-08-25 CN CN200880124874.0A patent/CN101965704B/en not_active Expired - Fee Related
- 2008-08-25 AT AT08869267T patent/ATE556502T1/en active
-
2015
- 2015-08-17 US US14/828,264 patent/US9729272B2/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1211837A1 (en) * | 2000-12-04 | 2002-06-05 | Telefonaktiebolaget Lm Ericsson | Unequal error protection in a packet transmission system |
| CN101009688A (en) * | 2006-01-23 | 2007-08-01 | 华为技术有限公司 | A method for loading and transferring packet voice |
Non-Patent Citations (2)
| Title |
|---|
| 乔耿嘉.基于H.263编码的无线视频通信差错控制技术研究.《中国优秀博硕士学位论文全文数据库 信息科技辑》.2004,(第03期), |
| 基于H.263编码的无线视频通信差错控制技术研究;乔耿嘉;《中国优秀博硕士学位论文全文数据库 信息科技辑》;20040915(第03期);全文 * |
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| US20150358112A1 (en) | 2015-12-10 |
| WO2009088336A1 (en) | 2009-07-16 |
| US9112647B2 (en) | 2015-08-18 |
| ATE556502T1 (en) | 2012-05-15 |
| US20100281333A1 (en) | 2010-11-04 |
| US9729272B2 (en) | 2017-08-08 |
| CN101965704A (en) | 2011-02-02 |
| EP2229743B1 (en) | 2012-05-02 |
| EP2229743A1 (en) | 2010-09-22 |
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